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Merge pull request #716 from bladeoner/master

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Properly report MSU-1 revision in the status register
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source/snes9x/msu1.cpp Normal file
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/***********************************************************************************
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com),
Jerremy Koot (jkoot@snes9x.com)
(c) Copyright 2002 - 2004 Matthew Kendora
(c) Copyright 2002 - 2005 Peter Bortas (peter@bortas.org)
(c) Copyright 2004 - 2005 Joel Yliluoma (http://iki.fi/bisqwit/)
(c) Copyright 2001 - 2006 John Weidman (jweidman@slip.net)
(c) Copyright 2002 - 2006 funkyass (funkyass@spam.shaw.ca),
Kris Bleakley (codeviolation@hotmail.com)
(c) Copyright 2002 - 2010 Brad Jorsch (anomie@users.sourceforge.net),
Nach (n-a-c-h@users.sourceforge.net),
(c) Copyright 2002 - 2011 zones (kasumitokoduck@yahoo.com)
(c) Copyright 2006 - 2007 nitsuja
(c) Copyright 2009 - 2016 BearOso,
OV2
(c) Copyright 2011 - 2016 Hans-Kristian Arntzen,
Daniel De Matteis
(Under no circumstances will commercial rights be given)
BS-X C emulator code
(c) Copyright 2005 - 2006 Dreamer Nom,
zones
C4 x86 assembler and some C emulation code
(c) Copyright 2000 - 2003 _Demo_ (_demo_@zsnes.com),
Nach,
zsKnight (zsknight@zsnes.com)
C4 C++ code
(c) Copyright 2003 - 2006 Brad Jorsch,
Nach
DSP-1 emulator code
(c) Copyright 1998 - 2006 _Demo_,
Andreas Naive (andreasnaive@gmail.com),
Gary Henderson,
Ivar (ivar@snes9x.com),
John Weidman,
Kris Bleakley,
Matthew Kendora,
Nach,
neviksti (neviksti@hotmail.com)
DSP-2 emulator code
(c) Copyright 2003 John Weidman,
Kris Bleakley,
Lord Nightmare (lord_nightmare@users.sourceforge.net),
Matthew Kendora,
neviksti
DSP-3 emulator code
(c) Copyright 2003 - 2006 John Weidman,
Kris Bleakley,
Lancer,
z80 gaiden
DSP-4 emulator code
(c) Copyright 2004 - 2006 Dreamer Nom,
John Weidman,
Kris Bleakley,
Nach,
z80 gaiden
OBC1 emulator code
(c) Copyright 2001 - 2004 zsKnight,
pagefault (pagefault@zsnes.com),
Kris Bleakley
Ported from x86 assembler to C by sanmaiwashi
SPC7110 and RTC C++ emulator code used in 1.39-1.51
(c) Copyright 2002 Matthew Kendora with research by
zsKnight,
John Weidman,
Dark Force
SPC7110 and RTC C++ emulator code used in 1.52+
(c) Copyright 2009 byuu,
neviksti
S-DD1 C emulator code
(c) Copyright 2003 Brad Jorsch with research by
Andreas Naive,
John Weidman
S-RTC C emulator code
(c) Copyright 2001 - 2006 byuu,
John Weidman
ST010 C++ emulator code
(c) Copyright 2003 Feather,
John Weidman,
Kris Bleakley,
Matthew Kendora
Super FX x86 assembler emulator code
(c) Copyright 1998 - 2003 _Demo_,
pagefault,
zsKnight
Super FX C emulator code
(c) Copyright 1997 - 1999 Ivar,
Gary Henderson,
John Weidman
Sound emulator code used in 1.5-1.51
(c) Copyright 1998 - 2003 Brad Martin
(c) Copyright 1998 - 2006 Charles Bilyue'
Sound emulator code used in 1.52+
(c) Copyright 2004 - 2007 Shay Green (gblargg@gmail.com)
S-SMP emulator code used in 1.54+
(c) Copyright 2016 byuu
SH assembler code partly based on x86 assembler code
(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
2xSaI filter
(c) Copyright 1999 - 2001 Derek Liauw Kie Fa
HQ2x, HQ3x, HQ4x filters
(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
NTSC filter
(c) Copyright 2006 - 2007 Shay Green
GTK+ GUI code
(c) Copyright 2004 - 2016 BearOso
Win32 GUI code
(c) Copyright 2003 - 2006 blip,
funkyass,
Matthew Kendora,
Nach,
nitsuja
(c) Copyright 2009 - 2016 OV2
Mac OS GUI code
(c) Copyright 1998 - 2001 John Stiles
(c) Copyright 2001 - 2011 zones
Libretro port
(c) Copyright 2011 - 2016 Hans-Kristian Arntzen,
Daniel De Matteis
(Under no circumstances will commercial rights be given)
MSU-1 code
(c) Copyright 2016 qwertymodo
Specific ports contains the works of other authors. See headers in
individual files.
Snes9x homepage: http://www.snes9x.com/
Permission to use, copy, modify and/or distribute Snes9x in both binary
and source form, for non-commercial purposes, is hereby granted without
fee, providing that this license information and copyright notice appear
with all copies and any derived work.
This software is provided 'as-is', without any express or implied
warranty. In no event shall the authors be held liable for any damages
arising from the use of this software or it's derivatives.
Snes9x is freeware for PERSONAL USE only. Commercial users should
seek permission of the copyright holders first. Commercial use includes,
but is not limited to, charging money for Snes9x or software derived from
Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
using Snes9x as a promotion for your commercial product.
The copyright holders request that bug fixes and improvements to the code
should be forwarded to them so everyone can benefit from the modifications
in future versions.
Super NES and Super Nintendo Entertainment System are trademarks of
Nintendo Co., Limited and its subsidiary companies.
***********************************************************************************/
#include "msu1.h"
#include "display.h"
#include "filebrowser.h"
#include "memmap.h"
#include "snes9xgx.h"
#include "apu/bapu/dsp/blargg_endian.h"
STREAM dataStream = NULL;
STREAM audioStream = NULL;
uint32 audioLoopPos;
size_t partial_samples;
// Sample buffer
int16 *bufPos, *bufBegin, *bufEnd;
#ifdef UNZIP_SUPPORT
static int unzFindExtension(unzFile &file, const char *ext, bool restart = TRUE, bool print = TRUE, bool allowExact = FALSE)
{
unz_file_info info;
int port, l = strlen(ext), e = allowExact ? 0 : 1;
if (restart)
port = unzGoToFirstFile(file);
else
port = unzGoToNextFile(file);
while (port == UNZ_OK)
{
int len;
char name[132];
unzGetCurrentFileInfo(file, &info, name, 128, NULL, 0, NULL, 0);
len = strlen(name);
if (len >= l + e && strcasecmp(name + len - l, ext) == 0 && unzOpenCurrentFile(file) == UNZ_OK)
{
if (print)
printf("Using msu file %s", name);
return (port);
}
port = unzGoToNextFile(file);
}
return (port);
}
#endif
STREAM S9xMSU1OpenFile(char *msu_ext)
{
char filename[MAXPATHLEN];
sprintf(filename, "%s%s%s", Memory.ROMFilePath, Memory.ROMFilename, msu_ext);
STREAM file = OPEN_STREAM(filename, "rb");
if (file)
printf("Using msu file %s.\n", filename);
#ifdef UNZIP_SUPPORT
// look for msu file in .msu1 (Mercurial Magic pack) if not found in rom dir
if (!file)
{
char zip_filename[MAXPATHLEN];
sprintf(zip_filename, "%s%s.msu1", Memory.ROMFilePath, Memory.ROMFilename);
unzFile unzFile = unzOpen(zip_filename);
if (unzFile)
{
int port = unzFindExtension(unzFile, msu_ext, true, true, true);
if (port == UNZ_OK)
{
printf(" in %s.\n", zip_filename);
file = new unzStream(unzFile);
}
else
unzCloseCurrentFile(unzFile);
}
}
#endif
if(!file)
printf("Unable to find msu file %s.\n", filename);
return file;
}
bool AudioOpen()
{
MSU1.MSU1_STATUS |= AudioError;
if (audioStream)
{
CLOSE_STREAM(audioStream);
audioStream = NULL;
}
char ext[_MAX_EXT];
snprintf(ext, _MAX_EXT, "-%d.pcm", MSU1.MSU1_CURRENT_TRACK);
audioStream = S9xMSU1OpenFile(ext);
if (audioStream)
{
if (GETC_STREAM(audioStream) != 'M')
return false;
if (GETC_STREAM(audioStream) != 'S')
return false;
if (GETC_STREAM(audioStream) != 'U')
return false;
if (GETC_STREAM(audioStream) != '1')
return false;
READ_STREAM((char *)&audioLoopPos, 4, audioStream);
audioLoopPos = GET_LE32(&audioLoopPos);
audioLoopPos <<= 2;
audioLoopPos += 8;
MSU1.MSU1_STATUS &= ~AudioError;
return true;
}
return false;
}
bool DataOpen()
{
if (dataStream)
{
CLOSE_STREAM(dataStream);
dataStream = NULL;
}
dataStream = S9xMSU1OpenFile(".msu");
if(!dataStream)
dataStream = S9xMSU1OpenFile("msu1.rom");
return dataStream != NULL;
}
void S9xResetMSU(void)
{
MSU1.MSU1_STATUS = 0;
MSU1.MSU1_DATA_SEEK = 0;
MSU1.MSU1_DATA_POS = 0;
MSU1.MSU1_TRACK_SEEK = 0;
MSU1.MSU1_CURRENT_TRACK = 0;
MSU1.MSU1_RESUME_TRACK = 0;
MSU1.MSU1_VOLUME = 0;
MSU1.MSU1_CONTROL = 0;
MSU1.MSU1_AUDIO_POS = 0;
MSU1.MSU1_RESUME_POS = 0;
bufPos = 0;
bufBegin = 0;
bufEnd = 0;
partial_samples = 0;
if (dataStream)
{
CLOSE_STREAM(dataStream);
dataStream = NULL;
}
if (audioStream)
{
CLOSE_STREAM(audioStream);
audioStream = NULL;
}
Settings.MSU1 = S9xMSU1ROMExists();
}
void S9xMSU1Init(void)
{
DataOpen();
}
bool S9xMSU1ROMExists(void)
{
STREAM s = S9xMSU1OpenFile(".msu");
if (s)
{
CLOSE_STREAM(s);
return true;
}
#ifdef UNZIP_SUPPORT
char fname[MAXPATHLEN];
sprintf(fname, "%s%s.msu1", Memory.ROMFilePath, Memory.ROMFilename);
unzFile unzFile = unzOpen(fname);
if (unzFile)
{
unzCloseCurrentFile(unzFile);
return true;
}
#endif
return false;
}
void S9xMSU1Generate(size_t sample_count)
{
partial_samples += 4410 * sample_count;
while (((uintptr_t)bufPos < (uintptr_t)bufEnd) && partial_samples > 3204)
{
if (MSU1.MSU1_STATUS & AudioPlaying && audioStream)
{
int16 sample;
int bytes_read = READ_STREAM((char *)&sample, 2, audioStream);
if (bytes_read == 2)
{
sample = (int16)((double)(int16)GET_LE16(&sample) * (double)MSU1.MSU1_VOLUME / 255.0);
*(bufPos++) = sample;
MSU1.MSU1_AUDIO_POS += 2;
partial_samples -= 3204;
}
else
if (bytes_read >= 0)
{
sample = (int16)((double)(int16)GET_LE16(&sample) * (double)MSU1.MSU1_VOLUME / 255.0);
*(bufPos++) = sample;
MSU1.MSU1_AUDIO_POS += 2;
partial_samples -= 3204;
if (MSU1.MSU1_STATUS & AudioRepeating)
{
MSU1.MSU1_AUDIO_POS = audioLoopPos;
REVERT_STREAM(audioStream, MSU1.MSU1_AUDIO_POS, 0);
}
else
{
MSU1.MSU1_STATUS &= ~(AudioPlaying | AudioRepeating);
REVERT_STREAM(audioStream, 8, 0);
}
}
else
{
MSU1.MSU1_STATUS &= ~(AudioPlaying | AudioRepeating);
}
}
else
{
MSU1.MSU1_STATUS &= ~(AudioPlaying | AudioRepeating);
partial_samples -= 3204;
*(bufPos++) = 0;
}
}
}
uint8 S9xMSU1ReadPort(uint8 port)
{
switch (port)
{
case 0:
return MSU1.MSU1_STATUS;
case 1:
{
if (MSU1.MSU1_STATUS & DataBusy)
return 0;
if (!dataStream)
return 0;
int data = GETC_STREAM(dataStream);
if (data >= 0)
{
MSU1.MSU1_DATA_POS++;
return data;
}
return 0;
}
case 2:
return 'S';
case 3:
return '-';
case 4:
return 'M';
case 5:
return 'S';
case 6:
return 'U';
case 7:
return '1';
}
return 0;
}
void S9xMSU1WritePort(uint8 port, uint8 byte)
{
switch (port)
{
case 0:
MSU1.MSU1_DATA_SEEK &= 0xFFFFFF00;
MSU1.MSU1_DATA_SEEK |= byte << 0;
break;
case 1:
MSU1.MSU1_DATA_SEEK &= 0xFFFF00FF;
MSU1.MSU1_DATA_SEEK |= byte << 8;
break;
case 2:
MSU1.MSU1_DATA_SEEK &= 0xFF00FFFF;
MSU1.MSU1_DATA_SEEK |= byte << 16;
break;
case 3:
MSU1.MSU1_DATA_SEEK &= 0x00FFFFFF;
MSU1.MSU1_DATA_SEEK |= byte << 24;
MSU1.MSU1_DATA_POS = MSU1.MSU1_DATA_SEEK;
if (dataStream)
{
REVERT_STREAM(dataStream, MSU1.MSU1_DATA_POS, 0);
}
break;
case 4:
MSU1.MSU1_TRACK_SEEK &= 0xFF00;
MSU1.MSU1_TRACK_SEEK |= byte;
break;
case 5:
MSU1.MSU1_TRACK_SEEK &= 0x00FF;
MSU1.MSU1_TRACK_SEEK |= (byte << 8);
MSU1.MSU1_CURRENT_TRACK = MSU1.MSU1_TRACK_SEEK;
MSU1.MSU1_STATUS &= ~AudioPlaying;
MSU1.MSU1_STATUS &= ~AudioRepeating;
if (AudioOpen())
{
if (MSU1.MSU1_CURRENT_TRACK == MSU1.MSU1_RESUME_TRACK)
{
MSU1.MSU1_AUDIO_POS = MSU1.MSU1_RESUME_POS;
MSU1.MSU1_RESUME_POS = 0;
MSU1.MSU1_RESUME_TRACK = ~0;
}
else
{
MSU1.MSU1_AUDIO_POS = 8;
}
REVERT_STREAM(audioStream, MSU1.MSU1_AUDIO_POS, 0);
}
break;
case 6:
MSU1.MSU1_VOLUME = byte;
break;
case 7:
if (MSU1.MSU1_STATUS & (AudioBusy | AudioError))
break;
MSU1.MSU1_STATUS = (MSU1.MSU1_STATUS & ~0x30) | ((byte & 0x03) << 4);
if ((byte & (Play | Resume)) == Resume)
{
MSU1.MSU1_RESUME_TRACK = MSU1.MSU1_CURRENT_TRACK;
MSU1.MSU1_RESUME_POS = MSU1.MSU1_AUDIO_POS;
}
break;
}
}
size_t S9xMSU1Samples(void)
{
return bufPos - bufBegin;
}
void S9xMSU1SetOutput(int16 * out, size_t size)
{
bufPos = bufBegin = out;
bufEnd = out + size;
}
void S9xMSU1PostLoadState(void)
{
if (DataOpen())
{
REVERT_STREAM(dataStream, MSU1.MSU1_DATA_POS, 0);
}
if (MSU1.MSU1_STATUS & AudioPlaying)
{
if (AudioOpen())
{
REVERT_STREAM(audioStream, 4, 0);
READ_STREAM((char *)&audioLoopPos, 4, audioStream);
audioLoopPos = GET_LE32(&audioLoopPos);
audioLoopPos <<= 2;
audioLoopPos += 8;
REVERT_STREAM(audioStream, MSU1.MSU1_AUDIO_POS, 0);
}
else
{
MSU1.MSU1_STATUS &= ~(AudioPlaying | AudioRepeating);
MSU1.MSU1_STATUS |= AudioError;
}
}
bufPos = 0;
bufBegin = 0;
bufEnd = 0;
partial_samples = 0;
}

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/***********************************************************************************
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com),
Jerremy Koot (jkoot@snes9x.com)
(c) Copyright 2002 - 2004 Matthew Kendora
(c) Copyright 2002 - 2005 Peter Bortas (peter@bortas.org)
(c) Copyright 2004 - 2005 Joel Yliluoma (http://iki.fi/bisqwit/)
(c) Copyright 2001 - 2006 John Weidman (jweidman@slip.net)
(c) Copyright 2002 - 2006 funkyass (funkyass@spam.shaw.ca),
Kris Bleakley (codeviolation@hotmail.com)
(c) Copyright 2002 - 2010 Brad Jorsch (anomie@users.sourceforge.net),
Nach (n-a-c-h@users.sourceforge.net),
(c) Copyright 2002 - 2011 zones (kasumitokoduck@yahoo.com)
(c) Copyright 2006 - 2007 nitsuja
(c) Copyright 2009 - 2016 BearOso,
OV2
(c) Copyright 2011 - 2016 Hans-Kristian Arntzen,
Daniel De Matteis
(Under no circumstances will commercial rights be given)
BS-X C emulator code
(c) Copyright 2005 - 2006 Dreamer Nom,
zones
C4 x86 assembler and some C emulation code
(c) Copyright 2000 - 2003 _Demo_ (_demo_@zsnes.com),
Nach,
zsKnight (zsknight@zsnes.com)
C4 C++ code
(c) Copyright 2003 - 2006 Brad Jorsch,
Nach
DSP-1 emulator code
(c) Copyright 1998 - 2006 _Demo_,
Andreas Naive (andreasnaive@gmail.com),
Gary Henderson,
Ivar (ivar@snes9x.com),
John Weidman,
Kris Bleakley,
Matthew Kendora,
Nach,
neviksti (neviksti@hotmail.com)
DSP-2 emulator code
(c) Copyright 2003 John Weidman,
Kris Bleakley,
Lord Nightmare (lord_nightmare@users.sourceforge.net),
Matthew Kendora,
neviksti
DSP-3 emulator code
(c) Copyright 2003 - 2006 John Weidman,
Kris Bleakley,
Lancer,
z80 gaiden
DSP-4 emulator code
(c) Copyright 2004 - 2006 Dreamer Nom,
John Weidman,
Kris Bleakley,
Nach,
z80 gaiden
OBC1 emulator code
(c) Copyright 2001 - 2004 zsKnight,
pagefault (pagefault@zsnes.com),
Kris Bleakley
Ported from x86 assembler to C by sanmaiwashi
SPC7110 and RTC C++ emulator code used in 1.39-1.51
(c) Copyright 2002 Matthew Kendora with research by
zsKnight,
John Weidman,
Dark Force
SPC7110 and RTC C++ emulator code used in 1.52+
(c) Copyright 2009 byuu,
neviksti
S-DD1 C emulator code
(c) Copyright 2003 Brad Jorsch with research by
Andreas Naive,
John Weidman
S-RTC C emulator code
(c) Copyright 2001 - 2006 byuu,
John Weidman
ST010 C++ emulator code
(c) Copyright 2003 Feather,
John Weidman,
Kris Bleakley,
Matthew Kendora
Super FX x86 assembler emulator code
(c) Copyright 1998 - 2003 _Demo_,
pagefault,
zsKnight
Super FX C emulator code
(c) Copyright 1997 - 1999 Ivar,
Gary Henderson,
John Weidman
Sound emulator code used in 1.5-1.51
(c) Copyright 1998 - 2003 Brad Martin
(c) Copyright 1998 - 2006 Charles Bilyue'
Sound emulator code used in 1.52+
(c) Copyright 2004 - 2007 Shay Green (gblargg@gmail.com)
S-SMP emulator code used in 1.54+
(c) Copyright 2016 byuu
SH assembler code partly based on x86 assembler code
(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
2xSaI filter
(c) Copyright 1999 - 2001 Derek Liauw Kie Fa
HQ2x, HQ3x, HQ4x filters
(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
NTSC filter
(c) Copyright 2006 - 2007 Shay Green
GTK+ GUI code
(c) Copyright 2004 - 2016 BearOso
Win32 GUI code
(c) Copyright 2003 - 2006 blip,
funkyass,
Matthew Kendora,
Nach,
nitsuja
(c) Copyright 2009 - 2016 OV2
Mac OS GUI code
(c) Copyright 1998 - 2001 John Stiles
(c) Copyright 2001 - 2011 zones
Libretro port
(c) Copyright 2011 - 2016 Hans-Kristian Arntzen,
Daniel De Matteis
(Under no circumstances will commercial rights be given)
MSU-1 code
(c) Copyright 2016 qwertymodo
Specific ports contains the works of other authors. See headers in
individual files.
Snes9x homepage: http://www.snes9x.com/
Permission to use, copy, modify and/or distribute Snes9x in both binary
and source form, for non-commercial purposes, is hereby granted without
fee, providing that this license information and copyright notice appear
with all copies and any derived work.
This software is provided 'as-is', without any express or implied
warranty. In no event shall the authors be held liable for any damages
arising from the use of this software or it's derivatives.
Snes9x is freeware for PERSONAL USE only. Commercial users should
seek permission of the copyright holders first. Commercial use includes,
but is not limited to, charging money for Snes9x or software derived from
Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
using Snes9x as a promotion for your commercial product.
The copyright holders request that bug fixes and improvements to the code
should be forwarded to them so everyone can benefit from the modifications
in future versions.
Super NES and Super Nintendo Entertainment System are trademarks of
Nintendo Co., Limited and its subsidiary companies.
***********************************************************************************/
#ifndef _MSU1_H_
#define _MSU1_H_
#include "snes9x.h"
#include <stdint.h>
#include <sys\stat.h>
struct SMSU1
{
uint8 MSU1_STATUS;
uint32 MSU1_DATA_SEEK;
uint32 MSU1_DATA_POS;
uint16 MSU1_TRACK_SEEK;
uint16 MSU1_CURRENT_TRACK;
uint32 MSU1_RESUME_TRACK;
uint8 MSU1_VOLUME;
uint8 MSU1_CONTROL;
uint32 MSU1_AUDIO_POS;
uint32 MSU1_RESUME_POS;
};
enum SMSU1_FLAG {
Revision = 0x02, //max: 0x07
AudioResume = 0x04,
AudioError = 0x08,
AudioPlaying = 0x10,
AudioRepeating = 0x20,
AudioBusy = 0x40,
DataBusy = 0x80
};
enum SMSU1_CMD {
Play = 0x01,
Repeat = 0x02,
Resume = 0x04
};
extern struct SMSU1 MSU1;
void S9xResetMSU(void);
void S9xMSU1Init(void);
bool S9xMSU1ROMExists(void);
STREAM S9xMSU1OpenFile(char *msu_ext);
void S9xMSU1Init(void);
void S9xMSU1Generate(size_t sample_count);
uint8 S9xMSU1ReadPort(uint8 port);
void S9xMSU1WritePort(uint8 port, uint8 byte);
size_t S9xMSU1Samples(void);
void S9xMSU1SetOutput(int16 *out, size_t size);
void S9xMSU1PostLoadState(void);
#endif